On Tue, Jun 27, 2017 at 2:19 PM Wido den Hollander <[email protected]> wrote:
> > > Op 27 juni 2017 om 19:00 schreef [email protected]: > > > > > > Hey Ceph folks, > > > > I was wondering what the current status/roadmap/intentions etc. are on > the possibility of providing a way of transitioning a cluster from IPv4 to > IPv6 in the future. > > > > My current understanding is that this not possible at the moment and > that one should deploy initially with the version they want long term. > > > > However, given the general lack of widespread readiness, I think lots of > us have deployed with IPv4 and were hoping to go to IPv6 when the rest of > our environments enabled it. > > > > Is adding such a capability to a future version of Ceph being considered? > > > > I think you can, but not without downtime. > > The main problem is the monmap which contains IPv4 addresses and you want > to change that to IPv6. > > I haven't tried this, but I think you should be able to: > - Extract MONMap > - Update the IPv4 addresses to IPv6 using monmaptool > - Set noout flag > - Stop all OSDs > - Inject new monmap > - Stop MONs > - Make sure IPv6 is fixed on MONs > - Start MONs > - Start OSDs > > Again, this is from the top of my head, haven't tried it, but something > like that should probably work. > > Wido > > > > > > Best regards, > > > > George V. > > _______________________________________________ > > ceph-users mailing list > > [email protected] > > http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com > _______________________________________________ > ceph-users mailing list > [email protected] > http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com I think you could configure all of your mons, osds and clients as dual-stack (both IPv4 and IPv6) in advance. Once you have confirmed IPv6 connectivity everywhere, add a new mon using its IPv6 address. You would then replace each mon one by one with IPv6 addressed mons. You can then start to deconfigure the IPv4 interfaces. Just a thought Jake > <http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com>
_______________________________________________ ceph-users mailing list [email protected] http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com
